The Reward for Spending on Hajj and Umrah
It is narrated from Sayyida Aisha (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) said to her regarding Umrah: “You will receive reward according to your fatigue and expenditure.”
Reference: Mustadrak Hakim: 471/1
Hakim declared it “authentic according to the conditions of Bukhari and Muslim.” And Dhahabi agreed with Hakim.